Publication Date:
2021-01-26
Description:
. The definition of the network resolution power is
an important parameter to be considered when evaluating
most of the seismic analysis, being connected to the location
quality and earthquakes detectability.
We estimated the resolving power of the seismic network
of Campi Flegrei. The results show that the actual moment
magnitude threshold is 0.5 in the Solfatara area, center of the
caldera, but increases sharply going away from the center.
We also estimated the theoretical resolution power of the
actual seismic network of Campi Flegrei plus 5 hypothetical
borehole stations, moving the borehole stations into 3 different wells. As expected, big improvements in the location parameters come from the use of borehole stations. The results
show that a 3000 m deep borehole located close to the actual
hypocentral area would allow to detect and locate the very
low magnitude earthquakes, probably connected to the hydrothermal system characterizing the Campi Flegrei caldera.
Finally, we performed an optimization analysis of the permanent seismic network of Campi Flegrei finding the best 3
station positions that would increase the resolution power of
the network to locate earthquakes in the South and offshore
part of the caldera. We evidenced that the actual network has
an improvable resolution in the South and West part of the
caldera
Description:
Published
Description:
49-55
Description:
1IT. Reti di monitoraggio e sorveglianza
Description:
JCR Journal
Keywords:
Campi Flegrei
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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